James edwin sheriff



UNrrnD STATESl PA'rnN'r @trium JAMES EDVIN SHERIFF, 0F NEWT YORK, N. Y., ASSIGNOR TO HARVEY M. MUNSELL AND JOHN H. BROVN, OF SAME PLACE.

TUHBULAR BODY.

SPECIFICATION forming part of Letters Patent N0. 607,594, dated July 19, 1898.

Application filed August 24, 1897- SGT2L1N0- 6491359- (NO model.)

T0 all whom, t may concern.-

Be it known that I, J AMES EDWIN SHERIFF, of New York, in the county and State of New York, have invented a new and useful Improvement in Tubular Bodies, of which the following is a speciticaticn. V

My invention relates to an improvexnentin tubular bodies, and more particularly to tubular bodies made up of longitudinal pieces and held together by pressure within the boreV tially into the curved form which it is to as# sume in the completed structure, and Fig. 4 is an end elevation of a modified form of tubular body.

The pieces which make up the body of the tube in my present invention may be made of steel or other suitable metal, although I do not wish to limit myself to any particular substance.' As distinguished from pieces the opposite sides of which follow radial lines from the central axis of the tubular body to its circumference the pieces herein shown and to which my present invention is directed have such widths that the sum total of their thick- .nesses on transverse lines will be substantially equal to a circumference described from the axis of the tubular body as a center and with a radius equal to the distance from said axis to the interior wall of the bore, while at points exterior to the inner wall of the bore the sum total of the thicknesses of the pieces along such transverse lines would be less than the length of a circumference drawn from the axis of the tubularbody as a center and with a radius equal to the distance of such point or points from the axis. In short, the structure is such that in orderto close the segments one to another throughout their depth it will be necessary to curve them in the saine direction, so that when closed one upon another to form a substantially solid wall a circumference drawn from the axis of the tubular body as a center and with aradius greater than the distance trom the said axis to the interior of the wall would cut the pieces in a diagonal direction.

Each of the piecesin the form shown in Figs. 1, 2, and 3 is denoted by A and may be made of any thickness desired or of any thickness which can be practically utilized in its bent condition. The several pieces Aare intended to rest, with their inner edges adjacent to each other, around the wall of the bore, and as they extend outwardly from the bore they become deiiected from radial lines, the angle of deiection gradually increasing as they approach the exterior surface ofthe tubular body and as the surfaces of the adjacent pieces are brought into contact throughout their entire depth.

Instead of starting the pieces at the periphery of the bore on substantially radial lines, as represented in Fig. l, they may be started on lines oblique to the radial lines, as represented in'Fig. 4, where the pieces are denoted by A. The curve which the pieces A' assume in the form shown in Fig. t is substantially the saine as the curve which the pieces A assume in Fig. l. In fact, Fig. 4 may be considered as a part of the structure shown in Fig. l, the wall of the bore in Fig. l being extended by removing the inner edges of the sections A for a distance which will bring their inner edges on a circumference drawn from the axis of a tubular body as a center and a radius equal to the radius of a bore represented in Fig. Il.

It will be observed that a radial pressure, particularly in the form shown in Fig. 4E, exerting its force outwardly from within the bore will tend to cause the pieces A' to tightly bind against one another, and thereby close more tightly together the adjacent sides of the pieces.

The subdivisions or pieces A may either be made in plain form, as represented in Fig. 2, and forced into the curved form and held therein by a binding-layer B of Wire, straps, or a casing, or they may bend into the shape IOO which they are finally to assume before being assembled and a binding-layerl then applied to hold. them intheir assembled adjustment.

While I have shown the subdivisions or pieces enwrapped by a layer of Wire, I Wish it to be understood that I do not limit myself to this particular form of binder, as I might employ in its stead a continuous casing or a series of straps or might dispense with it altogether.

Vhat I claim isl. A tubular body composed of subdivisions or pieces extending longitudinally of the body and having substantially the same thickness throughout their Width, the said pieces being curved laterally to bring their adjacent sides into proximity to one another, substantially asset forth.

2. A tubular body composed of subdivisions or pieces extending longitudinally thereof and curved laterally, the sum total of the thicknesses of the said pieces on transverse lines along a circumferential line exterior to the Wall of the bore being less than the length of said circumferential line and means for holding the said subdivisions or pieces in assembled adjustment, substantially as set forth.

3. A tubular body composed of subdivisions extending longitudinally of the body and from the periphery of the bore to the exterior of the body, the said subdivisions being curved laterally and said subdivisions being curvedcontinuously in the same direction from the periphery of the bore to the exterior of the body and means for holding the subdivisions in assembled adjustment, substantially as set forth.

`4. A tubular body composed of subdivisions extending longitudinally of the body and from the bore to the periphery of the v body, said subdivisions being of substantially uniform thicknesses throughout and curved laterally, the curve being such that the subdivisions Will rest With their adjacent faces in contact and means for holding the subdivisions in assembled adjustment, substantially as set forth.

JAMES EDI/VIN SIIERIFF. Witnesses:

FREDK. I-lAYNEs, C. S. SUNDGREN. 

